Synthesis, characterization and photocatalytic activity of nanoZnO and Ni-Co-ZnO nanocomposites (original) (raw)

2018

Abstract

Photocatalysis has attracted significant attention as a potential issue for degradation of toxic organic pollutants such as Congo Red. In this research spherical Pure ZnO nano particles and Ni-Co-ZnO nano composites (Zn0.95Ni0.04Co0.01O, Zn0.95Ni0.025Co0.025O and Zn0.95Ni0.01Co0.04O) have been synthesized by precipitation method. X- ray diffraction, Fourier transform Infra Red ,field emission scanning electron microscopy, EDX and ICP analysis confirmed the structure and composition of samples. The x-ray diffraction analysis (XRD) showed that all samples prepared were of Wurtzite structure and average crystal size of 17nm. Field emission scanning electron microscopy (FESEM) analysis revealed the spherical shape of all samples. The Fourier transform infrared spectroscopy (FT-IR) revealed bands at 435 cm-1, 480 cm-1 and 525 cm-1 are related to Zn-O bonds , related to the stretching vibrating bonds of ZnO. The results illustrated the Ni and Co ions substituted the Zn ions in ZnO crystal...

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